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Investigation of C/PPS Composites Degradation Process Using Acoustic Measurement

SYSNO ASEP	0360106
Document Type	C - Proceedings Paper (int. conf.)
R&D Document Type	Conference Paper
Title	Investigation of C/PPS Composites Degradation Process Using Acoustic Measurement
Author(s)	Fíla, Tomáš (UTAM-F)_{RID, SAI, ORCID} Valach, Jaroslav (UTAM-F)_{SAI, ORCID, RID} Kytýř, Daniel (UTAM-F)_{SAI, RID, ORCID} Šperl, Martin (UTAM-F)_{RID, SAI}
Number of authors	4
Source Title	EAN Proccedings. - Brno : Czech Society for Mechanics, 2011 / Návrat T. - ISBN 978-80-214-4275-7
Pages	s. 49-55
Number of pages	7 s.
Publication form	CD-ROM - CD-ROM
Action	Experimental Stress Analysis 2011
Event date	06.06.2011-09.06.2011
VEvent location	Znojmo
Country	CZ - Czech Republic
Event type	EUR
Language	eng - English
Country	CZ - Czech Republic
Keywords	acoustic measurement ; material degradation ; natural frequency
Subject RIV	JI - Composite Materials
OECD category	Composites (including laminates, reinforced plastics, cermets, combined natural and synthetic fibre fabrics
CEZ	AV0Z20710524 - UTAM-F (2005-2011)
UT WOS	000394059400007
EID SCOPUS	84905472569
Annotation	The article deals with assessment of fatigue degradation of C/PPS composites using simple acoustic measurement technique. Changes in natural frequency and attenuation decrement were chosen as indicators of fatigue damage accumulation in the studied composite material. New testing device was developed for acoustic measurement. The experimental setup was designed to chime the specimen by repeatable force of stiff striker exciting a specific natural mode of vibration and to record the acoustic response of the specimen to the impact simultaneously. From the power spectral density of the signal the natural frequency was obtained. Using the same signal, the attenuation decrement was estimated from regression of the its envelope.
Workplace	Institute of Theoretical and Applied Mechanics
Contact	Kulawiecová Kateřina, kulawiecova@itam.cas.cz, Tel.: 225 443 285
Year of Publishing	2012

Number of the records: 1